CS212
Security Detector
Serial-Addressable Receiver/Transmitter
Features
Description
The S-ART is a 16 pin circuit
designed for data transmission on a two things:
two-lead cable. The circuit is spe-
the order which can, in principle, be
■ Receives/Transmits Data
on Only Two Leads
1. Transmit data from the line cable
to the S-ART's two outputs OUT0
and OUT1.
■ Low Current Consumption
■ High Noise Immunity
cially developed for alarm systems
where it is desired to identify each
detector individually. There can be
up to 30 S-ART circuits/detectors
on the same 2-lead cable. This cable
transmits both DC supply to the
S-ART and information to/from the
S-ART.
■ Sabotage Surveilled Loop
2. Answer the S-ART controller
with the condition of the 2 inputs
IN0 and IN1 or IN2-3.
Input
The line signal is divided into 3 lev-
els in order to give a time signal for
synchronizing and a data signal
containing addresses, orders etc.
The S-ART works on the principle
by which an address is sent on the
line cable and the S-ART which rec-
ognizes the address then carries out
Typical signal levels for the three
levels would be 15V, 7.5V and 0V.
Block Diagram
Package Options
16L PDIP & 16L SO Wide
A method by
Line 1
S-ART
which, in principle,
the system can be
extended to an
infinite number of
S-ART is shown on
the block diagram.
The controller
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OUT0
A4
OUT1
DSR
IN2
Controller
Line N
A3
A2
IN3
A1
VDD
A0
DATAOUT
Gnd
scans the in/out-
puts of a number
of lines, each with
a maximum of 30
S-ARTs.
IN1
IN0
LINE
V
CK "1"
DATA "1"
DATA "0"
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com
Rev. 4/21/99
A
Company
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